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Heterophase conversion of K2ZrF6 into zirconium hydroxide

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Abstract

We have studied general kinetic aspects of the heterophase conversion of single-phase potassium hexafluorozirconate into zirconium hydroxide by potassium hydroxide solutions, related to the influence of the alkali concentration, the alkali-to-K2ZrF6 molar ratio, and temperature. The synthesized crystal-like X-ray amorphous zirconium hydroxide is an anamorphosis of potassium hexafluorozirconate. Heat treatment of the hydroxide at a relatively low temperature leads to the formation of nanostructured metastable tetragonal zirconium dioxide.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia

    A. V. Zhukov, S. V. Chizhevskaya & Pyae Phyo

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  1. A. V. Zhukov
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  2. S. V. Chizhevskaya
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  3. Pyae Phyo
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Correspondence to S. V. Chizhevskaya.

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Original Russian Text © A.V. Zhukov, S.V. Chizhevskaya, Pyae Phyo, 2017, published in Neorganicheskie Materialy, 2017, Vol. 53, No. 7, pp. 762–768.

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Zhukov, A.V., Chizhevskaya, S.V. & Phyo, P. Heterophase conversion of K2ZrF6 into zirconium hydroxide. Inorg Mater 53, 752–757 (2017). https://doi.org/10.1134/S0020168517070196

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  • DOI: https://doi.org/10.1134/S0020168517070196

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